Halp! Calibrating touchscreen on Panasonic CF-30

Hey all! I've been having an issue I can't figure out. Suddenly, I realized I'm in the heart of Linux users! I can ask here! I'm a total noob, so please be gentle.

I installed Xubuntu and got everything but the touchscreen working properly. The touchscreen works but the cursor is consistently off a bit, with the least error in the center of the screen and increasing as it moves to the sides. I've tried running xinput_calibrator but it doesn't help. I attempted to run libinput.calibrate-touchscreen but keep getting a "is a Wayland compositor running?" error message.

Any suggestions?